kdb+ and q
Q+A on all things kdb+ database and the q language
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real time data streaming from tickerplant

Hi, I have built a real time subscriber (RTS) to tickerplant , from which I would like to stream such data to the downstream. I want: - data can be streamed to the downstream as long as it is updated, without any query. - flow like this: data publish...

renbright by New Contributor II
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right to left evaluation

hi i m new to q and array programming language. i m having trouble understanding wat it means to be right to left evaluation. i was expecting the 2nd output should be 11 154 but this is not the case. im confused when the left operand of * operator ca...

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Resolved! differ applied on each day rather then the entire dataset

I am trying to run this query : select diffDate:differ startDate from tab where date within(.z.d-2;.z.d-1) I would expect to have this publishTime sym startDate difD 2024.01.10D00:00:01.014000000 test1 2024.01.11 1 2024.01.10D00:00:03.541000000 test1...

user931206 by New Contributor II
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Read JSON file output in KDB

Hello Team, I have attached sample JSON file. I have created a python code which reads json file as an input using pandas dataframe and returns dataframe contains information about all the employees. requirement is i need to load output(dataFrame) of...

KPC_0-1703133930027.png
KPC by New Contributor II
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